import { fireEvent, render, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { beforeEach, describe, expect, it, vi } from "vitest";
import { toast } from "react-toastify";
import { CompDocDialog } from "@/app/(protected)/workorders/_components/comp-doc/comp-doc-dialog";
import type { CompDocData, CompDocSaveStatus } from "@/domain/work-orders/types/completion-doc";
import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";

type SaveHandler = (data: CompDocData, status: CompDocSaveStatus) => void | Promise<void>;

vi.mock("@/domain/locations/use-cases/use-location-detail", () => ({
  useLocationDetail: () => ({ data: undefined }),
}));

vi.mock("@/domain/work-orders/use-cases/use-work-order-detail", () => ({
  useWorkOrderBoardDetail: () => ({ data: undefined, isLoading: false }),
}));

// A completion-doc upload that settles successfully. The backend has already set
// DocStatus=Yes and bumped the work-order row version inside the same transaction,
// so any client follow-up patch would carry a stale version.
vi.mock("@/domain/work-orders/use-cases/use-work-order-mutations", () => ({
  useUploadCompletionDoc: () => ({
    mutate: (_vars: unknown, options?: { onSuccess?: () => void | Promise<void> }) => {
      void options?.onSuccess?.();
    },
    isPending: false,
  }),
}));

vi.mock("react-toastify", () => ({
  toast: Object.assign(vi.fn(), { error: vi.fn(), success: vi.fn() }),
}));

vi.mock("@/app/(protected)/workorders/_components/comp-doc/comp-doc-draft-toast", () => ({
  showCompDocDraftSavedToast: vi.fn(),
}));

function baseRow(overrides: Partial<WorkOrderTableRow> = {}): WorkOrderTableRow {
  const defaults: WorkOrderTableRow = {
    id: 42,
    woNumber: "WO-42",
    site: "SEA1",
    type: "PM",
    severity: null,
    dispatcherId: "u1",
    dispatcherName: "Dispatcher",
    scheduledOn: "2026-06-01",
    completedDate: "2026-07-01",
    targetWeek: "",
    dayGroup: "",
    dayLabel: "",
    location: "Seattle",
    locationId: "mock-loc-1",
    pm: "HVAC",
    serviceNotes: "",
    extraServices: [],
    vendorId: "",
    company: "Vendor Co",
    tech: "Tech One",
    techPhone: "",
    apptStart: "",
    apptEnd: "",
    apptTime: "",
    status: "Scheduled",
    docStatus: "No",
    pocName: "Amazon Rep",
    pocPhone: "",
    pocNotes: "",
    additionalContacts: [],
    dueDate: "",
    rescheduleCount: 0,
    carriedOver: 0,
    originalWeek: "",
    originalDate: "",
    isPastDue: false,
    scheduleWeekOnly: false,
    mediaCount: 0,
    title: "PM — SEA1",
    priority: "Sev 3",
    primaryDispatchId: null,
    rowVersion: "v1",
    dispatchRowVersion: "",
    flagColor: null,
    isAddOn: false,
    upliftSummary: { hasUplift: false, pendingCount: 0 },
  };
  return { ...defaults, ...overrides };
}

describe("CompDocDialog signed PDF upload (SH-380)", () => {
  beforeEach(() => {
    vi.mocked(toast.error).mockReset();
  });

  function uploadSignedPdf(onSave: SaveHandler) {
    const onDateCompletedChange = vi.fn().mockResolvedValue(undefined);
    const client = new QueryClient({
      defaultOptions: { queries: { retry: false }, mutations: { retry: false } },
    });
    render(
      <QueryClientProvider client={client}>
        <CompDocDialog
          row={baseRow()}
          open
          onOpenChange={vi.fn()}
          onSave={onSave}
          onDateCompletedChange={onDateCompletedChange}
        />
      </QueryClientProvider>,
    );

    const fileInput = document.querySelector('input[type="file"]');
    expect(fileInput).not.toBeNull();
    fireEvent.change(fileInput!, {
      target: {
        files: [
          new File([new Uint8Array([0x25, 0x50, 0x44, 0x46, 0x2d])], "signed.pdf", {
            type: "application/pdf",
          }),
        ],
      },
    });

    return { onSave, onDateCompletedChange };
  }

  it("does not re-run the docStatus persist after a successful upload", async () => {
    // The server already marked the document generated; a client docStatus patch here would
    // carry the pre-upload row version and 409. It must not run.
    const onSave: SaveHandler = vi.fn(() =>
      Promise.reject(new Error("The record was modified by another user. Refresh and retry.")),
    );

    uploadSignedPdf(onSave);

    await waitFor(() => {
      expect(vi.mocked(toast.error)).not.toHaveBeenCalled();
    });
    expect(onSave).not.toHaveBeenCalled();
  });

  it("surfaces no error toast to the user when the signed PDF upload settles", async () => {
    const onSave: SaveHandler = vi.fn(() => Promise.reject(new Error("conflict")));

    const { onDateCompletedChange } = uploadSignedPdf(onSave);

    await waitFor(() => {
      expect(vi.mocked(toast.error)).not.toHaveBeenCalled();
    });
    expect(onDateCompletedChange).not.toHaveBeenCalled();
  });
});